Interbrew was a large Belgium-based brewing company which owned many internationally known beers, as well as some smaller local beers. In 2004, Interbrew merged with Brazilian brewer AmBev to form InBev, which at the time became the largest brewer in the world by volume, with a 13% global market share. In 2008, InBev further merged with American brewer Anheuser-Busch to form Anheuser-Busch InBev (abbreviated AB InBev).

Having its roots in Leuven, Interbrew was formed in 1988 when Brouwerij Artois, the Flemish brewers of Stella Artois (established before 1366) merged with Walloon-based brewer Piedboeuf. International expansion began when Interbrew acquired the notable Canadian brand Labatt. The transaction also included Labatt's assets, which included the Toronto Blue Jays baseball club, the Toronto Argonauts football club, and The Sports Network (the latter being immediately resold to NetStar Communications due to Canadian media ownership regulations). Labatt, at the time, was not much smaller than Interbrew. After the merger the company was considered a multinational, with both Canadian and Belgian roots.